Product: ba819405-e538-4836-b620-c769d1d0e570

Metadata Format
Product Title
Riding the crimson tide: mobile terrestrial consumers track phenological variation in spawning of an anadromous fish
Publication in Biology Letters 2013 9, 20130048, published 3 April 2013. Authors: Daniel E. Schindler, Jonathan B. Armstrong, Kale T. Bentley, KathiJo Jankowski, Peter J. Lisi and Laura X. Payne
Project ID
Project Title
Watershed control of hydrologic sources and thermal conditions in SW Alaska streams: a framework for forecasting effects of changing climate
Point of Contact(s)
LCC Network Data Steward
LCC Network Data Manager
Western Alaska Landscape Conservation Cooperative
1011 E. Tudor Road MS 281
Anchorage, Alaska 99503
Western Alaska Landscape Conservation Cooperative
1011 E. Tudor Road MS 281
Anchorage, Alaska 99503

Product Abstract

When resources are spatially and temporally variable, consumers can increase their foraging success by moving to track ephemeral feeding opportunities as these shift across the landscape; the best examples derive from herbivore– plant systems, where grazers migrate to capitalize on the seasonal waves of vegetation growth. We evaluated whether analogous processes occur in watersheds supporting spawning sockeye salmon (Oncorhynchus nerka), asking whether seasonal activities ofpredators and scavengers shift spatial distributions to capitalize on asynchronous spawning among populations of salmon. Both glaucous-winged gulls and coastal brown bears showed distinct shifts in their spatial distributions over the course of the summer, reflecting the shifting distribution of spawning sockeye salmon, which was associated with variation in water temperature among spawning sites. By tracking the spatial and temporal variation in the phenology of their principal prey, consumers substantially extended their foraging opportunity on a superabundant, yet locally ephemeral, resource. Ecosystem-based fishery management efforts that seek to balance trade-offs between fisheries and ecosystem processes supported by salmon should, therefore, assess the importance of life-history variation, particularly in phenological traits, for maintaining important ecosystem functions, such as providing marine-derived resources for terrestrial predators and scavengers.


Product Links

Product Keywords

  • ISO 19115 Topic Category (isoTopicCategory):
    • biota,
    • climatologyMeteorologyAtmosphere,
    • environment,
    • geoscientificInformation,
    • inlandWaters
  • Global Change Master Directory (GCMD) Science Keywords (theme):
    • SNOW/ICE,
    • SNOW,
    • STREAM,
    • LAKES,
  • End User Types - Landscape Conservation Cooperatives (LCC End User Type):
    • State agencies,
    • Federal resource managers,
    • Academics & scientific researchers

Associated Products

ID Title Metadata Link
f7e892d2-df75-46df-8845-b9087f3b1645 Watershed Control of Hydrologic Sources and Thermal Conditions in SW Alaska Streams: A Framework for Forecasting Effects of Changing Climate mdJSON ISO 19115-2 HTML
f7e892d2-df75-46df-8845-b9087f3b1645 Association between geomorphic attributes of watersheds, water temperature, and salmon spawn timing in Alaskan streams mdJSON ISO 19115-2 HTML
f7e892d2-df75-46df-8845-b9087f3b1645 Watershed geomorphology and snowmelt control stream thermal sensitivity to air temperature. mdJSON ISO 19115-2 HTML